CN104294094A - Al-Fe-Cu-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable - Google Patents
Al-Fe-Cu-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable Download PDFInfo
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- CN104294094A CN104294094A CN201410469543.8A CN201410469543A CN104294094A CN 104294094 A CN104294094 A CN 104294094A CN 201410469543 A CN201410469543 A CN 201410469543A CN 104294094 A CN104294094 A CN 104294094A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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Abstract
The invention discloses an Al-Fe-Cu-Zr series aluminum alloy for cables for coal mines and an aluminum alloy cable. The aluminum alloy contains the ingredients in percentage by weight: 0.2-1.1% of Fe, 0.01-0.4% of Cu, 0.001-0.2% of Zr, 0-0.1% of Si, 0-0.2% of B and the balance of Al and impurities. The aluminum alloy cable is produced through enabling the aluminum alloy to be subjected to the processes of melting, casting and rolling, so as to obtain aluminum alloy rods, then, carrying out drawing, stranding and softening, so as to form aluminum alloy wire cores, and then, carrying out extruded insulation, cabling and extruded sheathing or armoring on the conductor wire cores. The Al-Fe-Cu-Zr series aluminum alloy for the cables for the coal mines, disclosed by the invention, has the characteristics of high strength, high conductivity, good bending property and the like; the aluminum alloy cable produced from the aluminum alloy can meet the requirements on the properties of the cable in the field of the coal mines.
Description
Technical field
The present invention relates to coal mine cable technical field, be specifically related to a kind of coal mine cable Al-Fe-Cu-Zr line aluminium alloy and aluminium alloy cable.
Background technology
Coal Electricity cable due to circumstance complication, the working conditions used severe and mobile frequent, work-ing life is not long, the region of methane accumulation is very dangerous again, therefore not only very high to the security requirement of cable own, and very high to the wear resistance of frequent shifting field all-in-one cable, anti-external tensile force performance requriements.Therefore, Coal Electricity cable belongs to the higher product of technology content in cable industry.
Common cable adopts copper conductor, along with the overexploitation to copper resource, and copper resource growing tension, and be on the verge of scarcity, therefore need the wire using other materials to replace copper conductor, the demand in market could be met.In metallic substance, aluminium has that conductive effect is good, light weight, the characteristic such as cheap, and in recent years, for the reinforcement of environmental consciousness, strongly needs weight reduction to improve machine fuel utilization ratio, therefore, replaces copper core cable to be trend of the times with aluminium cable.In prior art, develop aluminium cable, but the defect such as common aluminium cable exists mechanical property and corrosion resistance is poor, do not possess the good bending property meeting the frequent movement of Coal Electricity cable; And according to the severe environment of Coal Electricity cable, have higher requirement to the electric conductivity of cable conductor and physical strength, and the electric conductivity of existing common aluminium cable and mechanical strength properties can not meet the requirement of Coal Electricity cable.Therefore, develop and a kind ofly can meet the aluminium alloy cable of service requirements in coal mining there are very wide market outlook.
Summary of the invention
The object of the invention is to overcome above shortcoming, a kind of coal mine cable Al-Fe-Cu-Zr line aluminium alloy and aluminium alloy cable are provided, this aluminium alloy has the characteristics such as high strength, high conductivity, bending property be good, and the aluminium alloy cable be made up of this aluminium alloy can meet the requirement to cable performance in field, colliery.
Technical scheme of the present invention is:
A kind of coal mine cable Al-Fe-Cu-Zr line aluminium alloy, the weight percent of the component comprised and each component is as follows:
Fe：0.2-1.1％；
Cu：0.01-0.4％；
Zr：0.001-0.2％；
Si：0-0.1％；
B：0-0.2％；
Surplus is Al and impurity;
The resistivity of described aluminium alloy is less than or equal to 0.028264 Ω mm
2/ m, specific conductivity is more than or equal to 61%IACS, and elongation at break is not less than 10%, and 90 degree of tired bending number of times are more than or equal to 30 times.
Further, described aluminium alloy also comprises rare earth element, and the content of described rare earth element accounts for the 0.1-0.3% of al alloy component gross weight.
Further, described rare earth element comprises Ce, La, and described Ce and La accounts at least 50% of rare earth element total amount.
Further, described aluminium alloy is under temperature 120 DEG C, stress 120MPa condition, and the average creep speed of 1-100 hour is less than or equal to 1 × 10
-2(%/h).
A kind of colliery aluminium alloy cable, the complete processing of described aluminium alloy cable comprises the steps:
A, above-mentioned aluminium alloy is obtained aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
Further, the filament tow that described aluminium alloy conductor core is respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and described monofilament is obtained through drawing by described aluminium alloy rod.
Further, described aluminium alloy cable is applicable to the Minepit environment of-40 DEG C-90 DEG C.
Further, described aluminium alloy cable is applicable to the coal mine moving class rubber sleeve flexible cable of voltage rating 8.7/10kV and following grade.
Further, described aluminium alloy cable is in 90 DEG C of long-time running situations, and current capacity is not less than 80% of same cross-sectional copper cable.
Further, described aluminium alloy cable not short circuit after 9000 counter-bending tests, not open circuit.
Coal mine cable Al-Fe-Cu-Zr line aluminium alloy provided by the invention and aluminium alloy cable, tool has the following advantages:
1, colliery provided by the invention aluminium alloy, is optimized the element of aluminium alloy, thus improves the performance of this aluminium alloy.Colliery provided by the invention aluminium alloy, select Al-Fe-Cu-Zr series, by adding Fe element, can improve physical strength and the tensile property of alloy, Fe can also significantly improve high-temperature creep resistance, and carries heavy alloyed anti-fatigue performance.Cu is important alloying element, has certain solid solution strengthening effect, the CuAl of Precipitation
2have obvious ageing strengthening effect, adding of Cu can carry heavy alloyed intensity and high temperature creep property, and can improve anti-fatigue performance.Zr and aluminium form ZrAl
3compound, can hinder recrystallization process, refinement recrystal grain, because Zr is on little than chromium and manganese of the impact of quenching sensitive, therefore should replace chromium and manganese refinement recrystallized structure with Zr; Meanwhile, Zr also can the antifatigue bending property of remarkable modified alloy, improves the work-ing life of cable.
Colliery provided by the invention aluminium alloy, select to add a small amount of Si in the alloy, the recrystal grain of goods is made to be able to further refinement, intensity, toughness are improved, plasticity, solidity to corrosion improve, and improve yield strength and the unit elongation of aluminium alloy, avoid the reprocessing of alloy product, enhance productivity, reduce production cost; The content of the present invention to Si has done restriction, because too much Si can cause tensile property to reduce, has influence on the processing characteristics of aluminium alloy cable, and may reduce the tired bending property of conductor, and too much Si also can reduce electrical property.
The present invention also preferably adds a certain amount of B, can improve processing characteristics, particularly the micro-processing characteristics of drawing and restrainting strand aspect of monofilament.
Colliery provided by the invention aluminium alloy, also preferably add a certain amount of rare earth elements RE, wherein Ce, La account at least 50% of rare earth element total content, rare earth element not only can significantly improve the electrical property of alloy, the effect improving the tired bending property of Alloy Anti can also be played, extend the work-ing life of cable.Preferred Ce and La, be because these two kinds of elements in the present invention effect to improve effect compared with other rare earth elements more obvious.
The present invention, by the content of optimized choice alloying constituent and Reasonable adjustment alloying constituent, formulates alloy formula, both can improve the performance of alloy, can not can worsen performance, particularly electrical property and the extension property of alloy again because of too much amount.Aluminum alloy materials provided by the invention, ensures the performance of alloy by rational alloying constituent proportioning.
Colliery provided by the invention aluminum alloy materials, after melting, casting, solid solution and aging treatment, rolling technology, the resistivity of the aluminium alloy obtained is less than or equal to 0.028264 Ω mm
2/ m, specific conductivity is more than or equal to 61%IACS, and elongation at break is not less than 10%, and under temperature 120 DEG C, 120MPa stress condition, the average creep speed of 1-100 hour is less than or equal to 1 × 10
-2(%/h), 90 degree of tired bending number of times are more than or equal to 30 times, and the most I of filament diameter moves 0.2mm to.
2, colliery provided by the invention aluminium alloy cable, be made up of aluminium alloy provided by the invention, the colliery aluminium alloy cable obtained not only has the technical requirements that good conductivity, tensile property, creep-resistant property and anti-fatigue performance, particularly bending resistance also reach colliery copper core; Meanwhile, colliery aluminium alloy cable due to snappiness good, and weight comparatively copper is gently a lot, thus more convenient to use as coal mine soft cable, effectively reduce the cost of Coal Electricity cable, improve working efficiency, there is very good technical economic benefit.Colliery provided by the invention aluminium alloy cable, be applicable to coal mine moving class rubber sleeve flexible cable, voltage rating 8.7/10kV and following coal rubber-sheathed flexible cable for mine, under 90 DEG C of long-time running conditions, current capacity is not less than 80% of same cross-sectional copper cable; And the not short circuit after 9000 counter-bending tests of colliery provided by the invention aluminium alloy cable, not open circuit, wherein, the test method that 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the present invention, the preparation method of the aluminium alloy conductor core that colliery aluminium alloy cable is used, comprises the following steps:
A, obtain cast material by carrying out casting to molten aluminium alloy: add the al alloy component mentioned in the present invention in proportion, under 700-800 DEG C of condition, carry out melting technology, then cast under 650-680 DEG C of condition, obtain ingot casting;
B, ingot casting solution treatment 2-6h within the scope of 460-550 DEG C that step a is obtained, then rapid quenching in the water coolant of 20-100 DEG C;
C, ingot casting ageing treatment 6-10h within the scope of 150-250 DEG C that step b is obtained, then be warming up to 300-400 DEG C, be rolled into rod of metal alloy;
D, within the scope of 280-300 DEG C, the rod of metal alloy that step c is rolled into carry out drawing process, make reduced cross-sectional area to the 50-60% of step c interalloy rod area, obtain aluminum alloy line;
E, under the temperature condition forming aluminium alloy core, aluminum alloy line steps d obtained again carries out drawings and processes, and makes the 70-100% of aluminum alloy line sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time thermal treatment 3-6h under 230-320 DEG C of condition, then under 300-400 DEG C of condition, incite somebody to action thermal treatment 8-14h again, obtain aluminium alloy conductor core.
In the preparation method of above-mentioned aluminium alloy conductor core, in casting step, heating should be slow, when adding multiple alloy pig again, should shove charge below 300 DEG C, to ensure foundry goods homogeneous heating, (fusing point close to eutectic) makes alloying element and second-phase be dissolved in matrix by the solid appearance thermal treatment of long period at as high temperature as possible, due to incorporating of trace alloying element, matrix is made to become sub-saturated state, can significantly put forward heavy alloyed intensity and plasticity by solid appearance process, improve the corrosion resistance nature of alloy; Tensile property and snappiness that (immersing heat-eliminating medium the time completely no more than 15s, to make foundry goods uniform quenching from foundry goods foundry goods of slinging) improves foundry goods is cooled fast after solid solution; In the timeliness initial stage, matrix saturation ratio is very large, the hardness of foundry goods can significantly improve, and along with the increase of aging time, the concentration between matrix and precipitate reaches balance, now precipitate precipitation starts slack-off, now through shorter soaking time, can grain growing be suppressed, thus obtain the aluminium alloy of less thick essence, obtain the intensity that excellent mechanical property is namely higher thus, good plasticity and toughness; In step f, twice annealing process can the internal stress of aluminium alloy stranded conductor to greatest extent, and the electric property of stable alloy line, stable dimensions reduces distortion, greatly improves stretchiness and the bendability of alloy wire.
Below the technical scheme for aluminium alloy provided by the invention and aluminium alloy cable is described in detail respectively:
Embodiment 1
A kind of coal mine cable Al-Fe-Cu-Zr line aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu | Zr | Si | B | RE | Al and impurity |
| Weight (Kg) | 2 | 1 | 1.5 | 0.7 | / | / | 994.8 |
| Weight percent (%) | 0.2 | 0.1 | 0.15 | 0.07 | / | / | 99.48 |
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain cast material by carrying out casting to molten aluminium alloy: add the al alloy component mentioned in the present invention in proportion, under 700 DEG C of conditions, carry out melting technology, then cast under 650 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 2h under 550 DEG C of conditions that step a is obtained, then rapid quenching in the water coolant of 20 DEG C;
C, ingot casting ageing treatment 6h under 150 DEG C of conditions that step b is obtained, then be warming up to 300 DEG C, be rolled into rod of metal alloy;
D, under 280 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make reduced cross-sectional area to 50% of step c interalloy rod area, obtain aluminum alloy line;
E, under the temperature condition forming aluminium alloy core, aluminum alloy line steps d obtained again carries out drawings and processes, and makes 70% of aluminum alloy line sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time thermal treatment 3h under 230 DEG C of conditions, then under 300 DEG C of conditions, incite somebody to action thermal treatment 8h again, obtain aluminium alloy conductor core.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add Al ingot, Al-Fe ingot, Al-Cu ingot, Al-Zr, Al-Si ingot in proportion, or add pure metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on the external sheath layer outside cable core, and cable core is twisted formed by power major insulation core, ground connection core, control conductor bundle, and power major insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.Central layer is filled out between core layer, and power major insulation core and ground connection core, the concentric stranding of control conductor.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene, chlorinatedpolyethylene, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to voltage rating 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, under 90 DEG C of long-time running conditions, current capacity is not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 2
A kind of coal mine cable aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu | Zr | Si | B | RE | Al and impurity |
| Weight (Kg) | 4 | 3 | 1 | / | 0.01 | / | 991.99 |
| Weight percent (%) | 0.4 | 0.3 | 0.1 | / | 0.001 | / | 99.199 |
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain cast material by carrying out casting to molten aluminium alloy: add the al alloy component mentioned in the present invention in proportion, under 760 DEG C of conditions, carry out melting technology, then cast under 680 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 5h under 460 DEG C of conditions that step a is obtained, then rapid quenching in the water coolant of 60 DEG C;
C, ingot casting ageing treatment 8h under 200 DEG C of conditions that step b is obtained, then be warming up to 350 DEG C, be rolled into rod of metal alloy;
D, under 290 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make reduced cross-sectional area to 55% of step c interalloy rod area, obtain aluminum alloy line;
E, under the temperature condition forming aluminium alloy core, aluminum alloy line steps d obtained again carries out drawings and processes, and makes 80% of aluminum alloy line sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time thermal treatment 4h under 290 DEG C of conditions, then under 360 DEG C of conditions, incite somebody to action thermal treatment 12h again, obtain aluminium alloy conductor core.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add alloy pig in proportion, or add pure metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power major insulation core, ground connection core, control conductor is stranded forms, and power major insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene, chlorinatedpolyethylene, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to voltage rating 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running current capacities and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 3
A kind of coal mine cable aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu | Zr | Si | B | RE | Al and impurity |
| Weight (Kg) | 5 | 0.8 | 0.7 | / | / | / | 993.5 |
| Weight percent (%) | 0.5 | 0.08 | 0.07 | / | / | / | 99.35 |
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain cast material by carrying out casting to molten aluminium alloy: add the al alloy component mentioned in the present invention in proportion, under 800 DEG C of conditions, carry out melting technology, then cast under 670 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 6h under 500 DEG C of conditions that step a is obtained, then rapid quenching in the water coolant of 100 DEG C;
C, ingot casting ageing treatment 10h under 250 DEG C of conditions that step b is obtained, then be warming up to 400 DEG C, be rolled into rod of metal alloy;
D, under 300 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make reduced cross-sectional area to 60% of step c interalloy rod area, obtain aluminum alloy line;
E, under the temperature condition forming aluminium alloy core, aluminum alloy line steps d obtained again carries out drawings and processes, and makes 100% of aluminum alloy line sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time thermal treatment 6h under 320 DEG C of conditions, then under 400 DEG C of conditions, incite somebody to action thermal treatment 8-14h again, obtain aluminium alloy conductor core.In this step, because aluminum alloy line sectional area does not reduce, the aluminium alloy conductor monofilament namely obtained is the aluminum alloy line in steps d.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add alloy pig in proportion, or add pure metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power major insulation core, ground connection core, control conductor is stranded forms, and power major insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene, chlorinatedpolyethylene, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to voltage rating 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running current capacities and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 4
A kind of coal mine cable aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu | Zr | Si | B | RE | Al and impurity |
| Weight (Kg) | 7 | 4 | 0.08 | 0.9 | 2 | 2 | 984.02 |
| Weight percent (%) | 0.7 | 0.4 | 0.008 | 0.09 | 0.2 | 0.2 | 98.402 |
Wherein, rare earth elements RE comprises Ce, La, Pr and Er, and wherein, the content of Ce and La accounts for 70% of rare earth element total content.
Aluminium alloy cable is processed obtained by following complete processing:
A, above-mentioned aluminium alloy is obtained aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
The filament tow that above-mentioned aluminium alloy conductor core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and monofilament is obtained through drawing by described aluminium alloy rod.Specifically according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power major insulation core, ground connection core, control conductor is stranded forms, and power major insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene, chlorinatedpolyethylene, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to voltage rating 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running current capacities and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 5
A kind of coal mine cable aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu | Zr | Si | B | RE | Al and impurity |
| Weight (Kg) | 8 | 0.6 | 2 | 0.3 | 1.5 | 1 | 986.6 |
| Weight percent (%) | 0.8 | 0.06 | 0.2 | 0.03 | 0.15 | 0.1 | 98.66 |
Wherein, rare earth elements RE comprises Ce, La and Er, and wherein, the content of Ce and La accounts for 60% of rare earth element total content.
Aluminium alloy cable is processed obtained by following complete processing:
A, above-mentioned aluminium alloy is obtained aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
The filament tow that above-mentioned aluminium alloy conductor core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and monofilament is obtained through drawing by described aluminium alloy rod.Specifically according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power major insulation core, ground connection core, control conductor is stranded forms, and power major insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene, chlorinatedpolyethylene, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to voltage rating 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running current capacities and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 6
A kind of coal mine cable aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu | Zr | Si | B | RE | Al and impurity |
| Weight (Kg) | 9 | 0.1 | 0.1 | 0.02 | 0.5 | 3 | 987.28 |
| Weight percent (%) | 0.9 | 0.01 | 0.01 | 0.002 | 0.05 | 0.3 | 98.728 |
Wherein, rare earth elements RE is Ce, La.
Aluminium alloy cable is processed obtained by following complete processing:
A, above-mentioned aluminium alloy is obtained aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
The filament tow that above-mentioned aluminium alloy conductor core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and monofilament is obtained through drawing by described aluminium alloy rod.Specifically according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power major insulation core, ground connection core, control conductor is stranded forms, and power major insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene, chlorinatedpolyethylene, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to voltage rating 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running current capacities and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 7
A kind of coal mine cable aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu | Zr | Si | B | RE | Al and impurity |
| Weight (Kg) | 10 | 2 | 0.01 | 0.05 | 1 | 1.7 | 985.24 |
| Weight percent (%) | 1 | 0.2 | 0.001 | 0.005 | 0.1 | 0.17 | 98.524 |
Wherein, rare earth elements RE comprises Ce, La and Pr, and wherein, the content of Ce and La accounts for 50% of rare earth element total content.
Aluminium alloy cable is processed obtained by following complete processing:
A, above-mentioned aluminium alloy is obtained aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
The filament tow that above-mentioned aluminium alloy conductor core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and monofilament is obtained through drawing by described aluminium alloy rod.Specifically according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power major insulation core, ground connection core, control conductor is stranded forms, and power major insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene, chlorinatedpolyethylene, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to voltage rating 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running current capacities and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 8
A kind of coal mine cable aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu | Zr | Si | B | RE | Al and impurity |
| Weight (Kg) | 11 | 0.3 | 0.5 | 1 | 0.04 | 2.6 | 984.56 |
| Weight percent (%) | 1.1 | 0.03 | 0.05 | 0.1 | 0.004 | 0.26 | 98.456 |
Wherein, rare earth elements RE is Ce, La.
Aluminium alloy cable is processed obtained by following complete processing:
A, by power above-mentioned aluminium alloy obtain aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
The filament tow that above-mentioned aluminium alloy conductor core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and monofilament is obtained through drawing by described aluminium alloy rod.Specifically according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power major insulation core, ground connection core, control conductor is stranded forms, and power major insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene, chlorinatedpolyethylene, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to voltage rating 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running current capacities and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Aluminium alloy above-described embodiment 1-8 preparation obtained carries out electroconductibility and resistivity experiment according to GB/T3956, extension at break experiment is carried out according to GB/T228-2002, creep test (1-100 hour) is carried out under temperature 120 DEG C, 120MPa stress condition, 90 degree of tired bending experiments, experimental data is as follows:
Table 1 aluminium alloy capability parameter list
As can be seen from the experimental data of table 1, the resistivity of aluminium alloy provided by the invention is less than or equal to 0.028264 Ω mm
2/ m, specific conductivity is more than or equal to 61%IACS, and elongation at break is more than or equal to 10%, and under temperature 120 DEG C, 120MPa stress condition, the average creep speed of 1 ~ 100 hour is less than or equal to 1 × 10
-2(%/h), 90 degree of tired bending number of times are more than or equal to 30 times.
In aluminum alloy materials provided by the invention, Fe can also significantly improve high-temperature creep resistance, and carries heavy alloyed anti-fatigue performance; Cu has certain solid solution strengthening effect, the CuAl of Precipitation
2have obvious ageing strengthening effect, adding of Cu can carry heavy alloyed intensity and high temperature creep property, and can improve anti-fatigue performance; Zr and aluminium form ZrAl
3compound, can hinder recrystallization process, refinement recrystal grain, can the antifatigue bending property of remarkable modified alloy, improves the work-ing life of cable.
And carry out analysis by the alloying constituent of above-mentioned experimental data and each embodiment and draw, appropriate Si is added in alloy material, make the intensity of aluminium alloy, toughness is improved, plasticity, solidity to corrosion improve, and improve yield strength and the unit elongation of aluminium alloy; B can improve the processing characteristics of alloy; And add a certain amount of rare earth elements RE in alloy material after, other performances such as electrical property, antifatigue bending property of alloy all can improve.
Meanwhile, aluminum alloy materials provided by the invention, because of each element mating reaction, makes the processing characteristics of alloy excellent, is preparing in cable craft, and the most I of filament diameter moves 0.2mm to.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments, equivalent replacement etc. done in protection scope of the present invention, all should be included within protection scope of the present invention.
Claims (10)
1. a coal mine cable Al-Fe-Cu-Zr line aluminium alloy, is characterized in that, the weight percent of the component that described aluminium alloy comprises and each component is as follows:
Fe：0.2-1.1％；
Cu：0.01-0.4％；
Zr：0.001-0.2％；
Si：0-0.1％；
B：0-0.2％；
Surplus is Al and impurity;
The resistivity of described aluminium alloy is less than or equal to 0.028264 Ω mm
2/ m, specific conductivity is more than or equal to 61%IACS, and elongation at break is not less than 10%, and 90 degree of tired bending number of times are more than or equal to 30 times.
2. aluminium alloy according to claim 1, is characterized in that, described aluminium alloy also comprises rare earth element, and the content of described rare earth element accounts for the 0.1-0.3% of al alloy component gross weight.
3. aluminium alloy according to claim 2, is characterized in that, described rare earth element comprises Ce, La, and described Ce and La accounts at least 50% of rare earth element total amount.
4. aluminium alloy according to any one of claim 1 to 3, is characterized in that, described aluminium alloy is under temperature 120 DEG C, stress 120MPa condition, and the average creep speed of 1-100 hour is less than or equal to 1 × 10
-2(%/h).
5. a colliery aluminium alloy cable, is characterized in that, the complete processing of described aluminium alloy cable comprises the steps:
A, the aluminium alloy according to any one of Claims 1-4 is obtained aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
6. colliery according to claim 5 aluminium alloy cable, is characterized in that, the filament tow that described aluminium alloy conductor core is respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and described monofilament is obtained through drawing by described aluminium alloy rod.
7. colliery according to claim 5 aluminium alloy cable, is characterized in that, described aluminium alloy cable is applicable to the Minepit environment of-40 DEG C-90 DEG C.
8. colliery according to claim 5 aluminium alloy cable, is characterized in that, described aluminium alloy cable is applicable to the coal mine moving class rubber sleeve flexible cable of voltage rating 8.7/10kV and following grade.
9. colliery according to claim 5 aluminium alloy cable, is characterized in that, described aluminium alloy cable is in 90 DEG C of long-time running situations, and current capacity is not less than 80% of same cross-sectional copper cable.
10. colliery according to claim 5 aluminium alloy cable, is characterized in that, the not short circuit after 9000 counter-bending tests of described aluminium alloy cable, not open circuit.
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| CN106636814A (en) * | 2017-03-03 | 2017-05-10 | 王国祥 | High-strength and heat-resistant aluminum alloy expanded-diameter bus |
| CN107653402A (en) * | 2017-09-12 | 2018-02-02 | 深圳市中金环保科技有限公司 | A kind of coal mine cable Al Fe Cu Ti aluminium alloys and aluminium alloy cable and preparation method |
| CN107974581A (en) * | 2017-12-12 | 2018-05-01 | 河南胜华电缆集团有限公司 | A kind of cable High-conductivity creep-resistant aluminum-alloy conductor and preparation method thereof |
| CN114427055A (en) * | 2022-01-26 | 2022-05-03 | 阳光电源股份有限公司 | Aluminum alloy material, conductive bar and calculation method of creep residual life of conductive bar |
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| CN103667811A (en) * | 2013-12-27 | 2014-03-26 | 安徽欣意电缆有限公司 | Al-Fe-Cu-RE aluminum alloy, preparation method thereof and aluminum alloy cable |
| CN103667810A (en) * | 2013-12-27 | 2014-03-26 | 安徽欣意电缆有限公司 | Al-Fe-Cu-Mg aluminum alloy, preparation method thereof and aluminum alloy cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103667811A (en) * | 2013-12-27 | 2014-03-26 | 安徽欣意电缆有限公司 | Al-Fe-Cu-RE aluminum alloy, preparation method thereof and aluminum alloy cable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106636814A (en) * | 2017-03-03 | 2017-05-10 | 王国祥 | High-strength and heat-resistant aluminum alloy expanded-diameter bus |
| CN107653402A (en) * | 2017-09-12 | 2018-02-02 | 深圳市中金环保科技有限公司 | A kind of coal mine cable Al Fe Cu Ti aluminium alloys and aluminium alloy cable and preparation method |
| CN107974581A (en) * | 2017-12-12 | 2018-05-01 | 河南胜华电缆集团有限公司 | A kind of cable High-conductivity creep-resistant aluminum-alloy conductor and preparation method thereof |
| CN114427055A (en) * | 2022-01-26 | 2022-05-03 | 阳光电源股份有限公司 | Aluminum alloy material, conductive bar and calculation method of creep residual life of conductive bar |
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